<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	/**
	 * Authenticates a user.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */

	private $_id;
	
    public function authenticate()
    {
		$login = strtolower( $this->username );

        $user = Users::model()->find(
			'LOWER(login)=?',array($login)
		);
        if( $user === null )
            $this->errorCode = self::ERROR_USERNAME_INVALID;
        elseif ( $user->password !== md5($this->password) )
            $this->errorCode=self::ERROR_PASSWORD_INVALID;
        else
        {
            $this->_id = $user->id;
			$this->username = $user->login;
            $this->errorCode=self::ERROR_NONE;
        }
        return !$this->errorCode;
    }

    public function getId()
    {
        return $this->_id;
    }
}